A) $\left[ \begin{array} { r r r } - 104 & - 52 & 67 \\5 & 2 & 0\end{array} \right]$

Multiple Choice

$A = \left[ \begin{array} { r r r } - 8 & 7 & 6 \\- 1 & - 4 & 2\end{array} \right] \text { and } B = \left[ \begin{array} { r r r } 1 & 4 & - 2 \\- 6 & - 2 & 3 \\- 9 & - 1 & 5\end{array} \right]$

A) $\left[ \begin{array} { r r r } - 104 & - 52 & 67 \\5 & 2 & 0\end{array} \right]$
B) $\left[ \begin{array} { r r r } - 8 & 28 & - 12 \\6 & 8 & 6 \\9 & 4 & 10\end{array} \right]$
C) not possible
D) $\left[ \begin{array} { r } - 1045 \\- 522 \\670\end{array} \right]$